Metallic packing-ring.



H. P. RHODES.

METALLIC PACKING RING.

APPLICATION FILED OCT. 27. 1913.

INVENTOR I ma, Di (Db/(7.).

ATTORNEYS THE NORRIS Pg-JLK: LEA, rnulu-mlnu. WASHINGTON, D. c.

Patented Apr. 20, 1915.

TIT

HAMPTON r. nnonns, or snanvnroiar, LOUISIANA.

METALLIC PACKING-RING.

Specification of Letters Patent.

Patented Apr. 20, 1915.

Application filed October 27, 1913. Serial No. 797,655.

To all whom it may concern:

Be it known that I, HAMPTON P. RHoDns, a citizen of the United States,residing at Shreveport, in the parish of Caddo and State of Louisiana,have invented certain new and useful Improvements in MetallicPacking-Rings, of which the following is a specification.

My invention relates to a sectional metallic packing ring, and moreparticularly relates to certain improvements upon the piston rod packingring shown and described in my United States Patent No. 934,627, issuedSeptember 21st, 1909.

It is the object of my invention to increase the life or period ofefficient utility of the packing ring specified in my previous patentabove referred to by slightly changing the construction of the ring asis hereinafter explained. I

With this object in view, my invention has relation to certain novelfeatures of the construction, an example of which is described in thefollowing specification and illustrated in the accompanying drawings,wherein:

Figure 1 is a plan view of my improved sectional metallic packing ring,and Fig. 2 is a view of the same in side elevation.

Referring now more particularly to the drawings, wherein like referencecharacters designate similar parts in both the figures, the numeral 1denotes a plurality of similar sections, which together form my ring,the preferred number of these sections being three. The opposing ends ofthe sections 1 are held in a slightly spaced relation by bonds 2 of softwire, having their ends molded in the correlated sections 1 or otherwise secured thereto. The ring formed by the sections 1 has three faces,one face being flat and lying in a plane transverse with the axis of thering; another face being cylindrical and constituting the interior faceof the ring, and the third face being gradually curved to intersect thetwo faces first specified. One or more of the sections 1 has formed uponits curved face a nib or projeotion 3, the function of which is fullyexplained in my previous patent, and which has no specific connectionwith my present improvement. The interior aperture of my packing ring isaccurately proportioned to receive a piston rod, and during the use ofthe ring in a stuffing box, the distance between the sections of thering will very gradually diminish as the interior face of the ring isworn down. When the opposing end. faces of the sections of the ring comeinto contact with each other, the ring may no longer adapt itself towear and its utility ceases.

As shown in the drawings the sections have each an inner corner 1rounded off. The effect of this construction is that each end face'isgradually merged with the inner cylindrical face of the section and thesharp corner which would otherwise be present at the intersection, iseliminated.

Experience has demonstrated that while a packing made in accordance withthe teach- I ings of my patent to which I have hereinabove madereference, possesses marked utility and is capable of very satisfactoryservice, the same however possesses that disadvantageouscharacteristic,-inherent in the formation of the square ends of thepacking sections,resulting from accumulation or depositing of smallflakes or slivers of metal between the ends which, obviously, constitutebarriers or obstructions preventing the closing of the ends together tothe extent originally intended and thereby limiting the adjustment ofthe sections toward each other; and furthermore when such a conditiondoes not arise and the sections are firmly impinged together endwisethere of, there is presented some difliculty in adequately lubricatingthe packing or shafting working therethrough. It is to the eliminationof these objectionable features that my present conception has beendirected, and I have found successful results have been obtained by thestructure hereinabove set forth, in the operation of which it will beseen that as the inner surface of the packing ring wears away and thering as an entirety is compressed to bring the ends of the sectionstogether, a portion only of such ends will directly contact, whileleaving unobstructed spaces between other portions of saidends,specifically the inner corners of the ends,-into which saidparticles of metal or obstructing accumulations may fall and escape bybeing carried off axially of the packing on the piston rod, from whichlat ter they may be readily wiped or otherwise removed; and suchconstantly maintained spaces extending as they do lengthwise of theshaft will afford open ways through which a lubricating fluid may findits way to the surface of the shaft and to the packing on the interiorof the latter or Within the box in which the same is placed for ad.-

- j ustment.

Copies of this patent may be obtained for The invention is presentedas'including all such modifications and changes as properly comewithinthe scope of the following claims.

WVhat I claim is: V

1. A sectional metallic packing ring comprising a plurality of'sections, Wire bonds joining said sections and holding theirextremities in a'spaced relation, each section having its end facesintersecting its interior face in gradual curves.

2. A packing ringeomprising a plurality of similar sections, and meansfor holding said sections in a slightly spaced relation, the end facesof each section having intersection with the interior face of the samein gradual curves;

3. A packing ring comprising a plurality of similar sections held in aslightly spaced relation, the ends of the sections being so formed thatthe spaces between the sections are increased slightly in Width adjacentto theinterior surface of the ring.

l. A packing ring comprising a plurality of sections normally spacedapart at their ends to permit adjustment toward each other, the outerportions of said ends being formed to close together at the limit ofsuch adjustment and the inner portions of said ends spreading tomaintain a space therebetween, substantially as and for the purposedescribed.

HAMPTON P. RHODES.

Witnesses:

G. A. LHnmssoN, S. M. Fosrnn.

five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

